RE: developer token linking issue – “developer_token_prohibited”

[Google Ads API Forum Advisor]

Hi,

Thank you for reaching out to the Google Ads API support team.

Please be informed that I have removed your response from the forums as it contained the PII information.

Based on the provided information, I understand that you have encountered the DEVELOPER_TOKEN_PROHIBITED error. Usually it occurs when the developer token is not allowed with the project '135506890687' sent in the request. Please note that each Google API Console project can be associated with the developer token from only one manager account. Once you make a Google Ads API request, the developer token is permanently paired to the Google API Console project. 

Additionally, if switching to a developer token under a new manager account, you first need to create a new Google API Console project for Google Ads API requests that use the new manager's token. If you don't use a new Google API Console project, you'll get a DEVELOPER_TOKEN_PROHIBITED error when making a request. Also, please check if you have the correct access level to the Google Ads account that you are accessing.

 If you don't want to create a new project and if you are looking for an alternative solution to avoid the DEVELOPER_TOKEN_PROHIBITED error, please note that it can be fixed by a manual update of the Google Cloud project to which the developer token is associated. Please note that this change requires a manual database update, and could take a few days to complete. So, kindly confirm if you want us to fix this issue by a manual update of the Google Cloud project?

 

Thanks,
 

Google Ads API Team

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[2025-10-22 09:43:38Z GMT] This message is in relation to case "ref:!00D1U01174p.!500Ht01vRTKc:ref" (ADR-00336189)